7 weeks post d&c had period with hcg still present

Natalie • 2 losses and 1 beautiful daughter. Pregnant with #2 and praying to make it all the way.
Had a miscarriage 7 weeks ago. Period took forever so I had a hcg level taken it was 22. Of course the next day AF started. I was still getting positive hpt a few days before AF
I didn't continue to test until they went negative because I assumed it would go back to zero. However, I  now confused. I am 7dpo in the two week wage and couldn't resist the urge to pee on a stick. Well now I got a very very faint positive. My dates are correct because I use ovulation kits. I may be off by 1-2 days at most. 
My question. Has anyone had residual hormone AFTER a visit from AF? I am preparing mental for that to be the case. I was hoping to hear some positive stories...maybe???
I want to be pregnant again, but 7dpo is early for a positive.  

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